Valve mechanism



R. SHOWMIN VALVE MECHANISM mmh '24, mi.

2 .Swolfs-sheer `Filed Feb. 16, 1928 E Vz/ noewlfoz March 24, 1931. R,sHOwMlN VALVE MECHAN I SM Filed Feb- 16, 1928 2 Sheets-Sheet PatentedMar. 24, 1931 UNITED STATES` PATENT OFFICE ROSS SHOWMIN, OF TOLEDO, OHIOVALVE MECHANISM Application l'ed February 16, 1928. Serial No. 254,807.

This invention relates to aV valve mechanism.

It is particularly aimed to provide a construction wherein the valvemechanism may be maintained comparatively cool for etlicient operation.

- Anotherobject is to provide a novel construction wherein the parts arehollow and in communication with the water jacket of'an internalcombustion engine so that the waterV thereof may be used for coolingpurposes.

The present invention constitutes an improvement of the valve mechanismdisclosed in my Patent No. 1,719,674, July 2, 1929.

Vith the foregoing and other objects in view, the invention consists inthe construction, combination and arrangement of parts hereinafter fullydescribed and claimed, and illustrated in the accompanying drawings,wherein:

Figure 1 is a view in side elevation of an internal combustion engineequipped with a valve constructed in accordance with my invention,

Figure '2 is a sectional view taken on the vertical plane indicated bythe line 2 -2 of Figure 1,

Figure 3 is a sectional view taken on the vertical plane indicated bythe line 3-3 of Figure 2,

Figure 4 is a sectional view taken on the horizontal plane indicated bythe line 4-4 of Figure 3, and

Figure 5 is a sectional View taken on the vertical plane indicated bythe line 5 5 of Figure 3.

Referring in detail to the drawings, 1 designates the cylinder block, 2the head, 3 the crank case and 4 the water jacket of an internalcombustion engine. All parts of the engine, with the exception of thehead 2 and the parts associated therewith, may be of any well known orappropriate construction.

The head 2 is hollow, and is provided in its upper side with alongitudinally extending opening 5. A gasket 6 and a plate 7 close theopening 5, and are secured in place by cap screws 8. Bolts 9 secure thehead 2 to the cylinder block 1, and they pass through sleeves 10arranged lwithin andformed integrally with the head. p

A valve tube or chamber 11 extends centrally andlongitudinally throughthe head 2, and is formed integrally with the ends thereof. Tubes 12which extend from the lower side of the valve chamber 11 to the lowersidey of the head 2 and are formed integrally with these parts, providepassages for .con-w veying the explosive mixture or fuel from the valvechamber to the engine cylinders-and for conveying the exhaust or spentgases from the cylinders through the valve chamber. Tubes 13 whichprovide intake ports, extend from one lateral side of the head 2 to thecorresponding side of the valve chamber 11, and tubes 14 which provideexhaust ports, extend from the opposite side of the valve chamber to theopposite side ofthe head, these tubes being formed integrally with theseparts. Intake and exhaustmanifolds, not shown, are to 'be secured to thesides of the head 2in communication with the intake ports 13 and exhaustports 14, respectively. v

A hollow cylindricalv valve is rotatably mounted in the valve chamber11. It is provided with ports 16 adapted to controlthe admission of thefuel tothe engine cylinders through the intake ports 13 and passages 12,and the escape of the exhaust-gases from the l cylinders through thepassages 1,2 and the SOy exhaust ports 14. The manner in which the valveports 16 .are arranged relatively so kas to insure-the opening andclosing at the proper intervals of the intake and exhaust ports of thecylinder,-is clearly shown in Figures 3 and 4; To prevent the fuel andexhaustgases from leaking by the ports 16, the valve 15 is provided ateach side of each-of the ports with packing rings 17 which contact-withthe valve chamber 11.-adj acentthe ports 13 and 14. The valve 15 extendsbeyond the ends ofthe head 2. Collars 18 which are secured to the-endsof the valve 15 and contact with the-ends of the head 2, serve to -holdthe valve against endwise *play in the valve chamber 11. The valve 15 isrotated from the crank shaft 19 of the engine by a sprocket chain 2Owhich passes about a sprocket wheel 21V secured the valve chamber 11,and the blocks are.

adapted to be moved downwardly to eect the stated adjustment of thevalve 15 by screws 25 which are threadedly engaged with the guides,contact with the upper ends of the blocks andare accessible to theopening 5 0f the head 2. The valve 15 is maintained in adjusted positionby jamb nuts 26 engaged with the pins 25 and contacting with the upperends of the4 guides 24, and by yokes 27 which are mounted on the collars18 and secured to the ends of the head 2 by cap screws 28. |Ihe openings29 in the yokes 27, which are provided for the reception of thescrews28, are larger diamet-rically than the screws in order to permit thevalve 15 to be adjusted in the manner stated and the yokes to bethereafter adjusted to compensate for the change in position of thevalve to move the yoke to the most advantageous position by shifting thesame along a line passing through the axes of screws 28. The screws 28are loosened before adjusting the valve, and after the valve has beenadjusted they are tightened.

lIhe valve 15 is provided with lubricant at points between therespective pairs of ports 13 and 14 by tubes 30 arranged within the head2 and connected to the upper side of the valve chamber 11, and by pipes31 vwhich are connected to thetub-es 30 and to whichoil from the crankcase 3 is delivered by any suitable or appropriate means, not shown.

'Ihe head 2 and the valve-15 are connected to the water jacket 4 and tothe radiator of the engine tobring about the `circulation of watertherethrough and thus prevent their overheating. The head 2 communicateswith the water jacket 4 by way of openings 32 formed in the lower sideof the former, and communicate with the radiator, not shown, by way of atube 33 connected to its upper side and front ends by a spout 34. A pipef 35 connected to the water jacket 4 and swivelly connected to the rearend of the valve 15 by a coupling 36, and a pipe 37- swivelly connectedto the front end of the valve by a coupling 38, provide for the passageof the water through the valve. The' pipe 37 is supported by a bracket39 through which it passes and which is bolted to the front end of thehead 2.

The head 2 is provided with chambers 40 for the reception of the sparkplugs 41, and

Vmay be Vmade when desired as are within the scope of the invention asclaimed.

l/Vhat is claimed is 1. An internal combustion engine comprise ing ahead having acylindrical valve chamber, a similarly formed valverotatably mounted in the valve chamber and extending beyond the ends ofthe head, means carriedby the head for exerting a downward pressure onthe valve, yokes secured to the valve, and

plieais adj ustably connecting the yokes to the 2. An internalcombustion engine comprising a head having a cylindrical valve chamber,a similarly formed' valve rotatably mounted in the valve chamber andextending beyond the ends of the head, means angularly disposed betweenthe vertical andhorizontal and carried by the head for exerting adownward pressure on the valve, yokes adjacent opposite ends of thevalve and supporting the latter, and means adjustably connecting theyokes to the head at an angle between the vertical and horizontal and inopposed relation to the first mentioned means.

Intestimony whereof I aiix my signature.

ROSS SI-IOIVMIN.

